Route
Junction number
9B
Markerpost
48.8 km
Name
Maidenhead Thicket Interchange
Terminus
Terminus at top of exit list
Other routes
A4
Authority
Restricted turns
Full access
Services
No services
A404(M) J9B Maidenhead Thicket Interchange
Layout and signage
|
Twyford Reading Maidenhead A4 Marlow High Wycombe Oxford (M40 Link) A404 |
A4 |
|
A4 |
N/A |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
Other events
End of motorway regulations
Start of motorway regulations
What's new
The monster seen from below
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
The road that made no sense
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
The forever bottleneck, part 2
The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.
Have you seen...
Reigate Tunnel
An unassuming Surrey market town with an amazing claim to fame — the world's first road tunnel.
About this page
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Last updated
Published
Last updated
